Figure 4
Three-dimensional curvature formation according to the number of radial patterns with facet. (a) FEM simulation results for each sample condition and (b) experimental results (from the left to right, the top view images of the ink-patterned PS films with non-inked central facet region before NIR-induced actuation; top view images of the NIR-actuated films. The optical transmittance (It) images are as observed between crossed polarizers, and their side view images (of actuated samples turned upside down). From top to bottom, images are shown of samples with radial patterns with 3–8 arms with central facet region (D = 2 cm). The scale bar indicates 2 cm.
